Get rid of autoconf artifacts and bump to 1.8.3.
Merge pull request #43 from gahr/autocleanup

Get rid of autoconf artifacts and bump to 1.8.3.
handle_socket_error proc and catch flush errors

A flush to a disconnected socket would trace back all the way past the fileevent handler, resulting in the fileevent handler being removed.  Instead we want to close the connection.

New proc handle_socket_error to invoke the eof handler with the posix error code if it can be determined.
Merge branch 'master' into cpp

Conflicts:
	README.FreeBSD
	configure
	ctable_server/configure
	ctables/configure
	stapi/configure

BUGZID: